mirror of
https://github.com/mozilla/gecko-dev.git
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c0c566b251
forms.css sets overflow: -moz-hidden-unscrollable on all select elements. ApplyOverflowClipping in nsFrame.cpp applies overflow clips that are not managed by scroll frames. nsCSSFrameConstructor::ConstructSelectFrame creates an nsListControlFrame for listbox select elements. nsListControlFrame is an nsHTMLScrollFrame. As a result, the clip as applied twice - once by the nsHTMLScrollFrame, and then again by ApplyOverflowClipping. Adding an exception for nsListControlFrame to ShouldApplyOverflowClipping gets rid of the double clip. But we still need to apply the clip when calculating the frame's visual overflow rect, so we add the list box frame type to the list of special-cased frames in UnionBorderBoxes. --HG-- extra : rebase_source : d334647f84e5ebda2e7121c772e3b1ecec0d23a4
899 lines
38 KiB
C++
899 lines
38 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* base class of all rendering objects */
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#ifndef nsFrame_h___
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#define nsFrame_h___
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#include "mozilla/Attributes.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/Likely.h"
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#include "nsBox.h"
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#include "mozilla/Logging.h"
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#include "nsIPresShell.h"
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#include "nsHTMLReflowState.h"
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#include "nsHTMLParts.h"
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#include "nsISelectionDisplay.h"
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/**
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* nsFrame logging constants. We redefine the nspr
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* PRLogModuleInfo.level field to be a bitfield. Each bit controls a
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* specific type of logging. Each logging operation has associated
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* inline methods defined below.
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*/
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#define NS_FRAME_TRACE_CALLS 0x1
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#define NS_FRAME_TRACE_PUSH_PULL 0x2
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#define NS_FRAME_TRACE_CHILD_REFLOW 0x4
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#define NS_FRAME_TRACE_NEW_FRAMES 0x8
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#define NS_FRAME_LOG_TEST(_lm,_bit) (int((_lm)->level) & (_bit))
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#ifdef DEBUG
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#define NS_FRAME_LOG(_bit,_args) \
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PR_BEGIN_MACRO \
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if (NS_FRAME_LOG_TEST(nsFrame::GetLogModuleInfo(),_bit)) { \
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PR_LogPrint _args; \
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} \
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PR_END_MACRO
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#else
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#define NS_FRAME_LOG(_bit,_args)
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#endif
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// XXX Need to rework this so that logging is free when it's off
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#ifdef DEBUG
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#define NS_FRAME_TRACE_IN(_method) Trace(_method, true)
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#define NS_FRAME_TRACE_OUT(_method) Trace(_method, false)
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// XXX remove me
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#define NS_FRAME_TRACE_MSG(_bit,_args) \
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PR_BEGIN_MACRO \
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if (NS_FRAME_LOG_TEST(nsFrame::GetLogModuleInfo(),_bit)) { \
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TraceMsg _args; \
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} \
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PR_END_MACRO
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#define NS_FRAME_TRACE(_bit,_args) \
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PR_BEGIN_MACRO \
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if (NS_FRAME_LOG_TEST(nsFrame::GetLogModuleInfo(),_bit)) { \
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TraceMsg _args; \
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} \
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PR_END_MACRO
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#define NS_FRAME_TRACE_REFLOW_IN(_method) Trace(_method, true)
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#define NS_FRAME_TRACE_REFLOW_OUT(_method, _status) \
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Trace(_method, false, _status)
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#else
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#define NS_FRAME_TRACE(_bits,_args)
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#define NS_FRAME_TRACE_IN(_method)
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#define NS_FRAME_TRACE_OUT(_method)
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#define NS_FRAME_TRACE_MSG(_bits,_args)
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#define NS_FRAME_TRACE_REFLOW_IN(_method)
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#define NS_FRAME_TRACE_REFLOW_OUT(_method, _status)
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#endif
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// Frame allocation boilerplate macros. Every subclass of nsFrame
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// must define its own operator new and GetAllocatedSize. If they do
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// not, the per-frame recycler lists in nsPresArena will not work
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// correctly, with potentially catastrophic consequences (not enough
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// memory is allocated for a frame object).
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#define NS_DECL_FRAMEARENA_HELPERS \
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void* operator new(size_t, nsIPresShell*) MOZ_MUST_OVERRIDE; \
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virtual nsQueryFrame::FrameIID GetFrameId() override MOZ_MUST_OVERRIDE;
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#define NS_IMPL_FRAMEARENA_HELPERS(class) \
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void* class::operator new(size_t sz, nsIPresShell* aShell) \
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{ return aShell->AllocateFrame(nsQueryFrame::class##_id, sz); } \
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nsQueryFrame::FrameIID class::GetFrameId() \
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{ return nsQueryFrame::class##_id; }
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//----------------------------------------------------------------------
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struct nsBoxLayoutMetrics;
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struct nsRect;
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/**
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* Implementation of a simple frame that's not splittable and has no
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* child frames.
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*
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* Sets the NS_FRAME_SYNCHRONIZE_FRAME_AND_VIEW bit, so the default
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* behavior is to keep the frame and view position and size in sync.
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*/
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class nsFrame : public nsBox
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{
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public:
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/**
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* Create a new "empty" frame that maps a given piece of content into a
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* 0,0 area.
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*/
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friend nsIFrame* NS_NewEmptyFrame(nsIPresShell* aShell,
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nsStyleContext* aContext);
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private:
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// Left undefined; nsFrame objects are never allocated from the heap.
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void* operator new(size_t sz) CPP_THROW_NEW;
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protected:
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// Overridden to prevent the global delete from being called, since
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// the memory came out of an arena instead of the heap.
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//
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// Ideally this would be private and undefined, like the normal
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// operator new. Unfortunately, the C++ standard requires an
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// overridden operator delete to be accessible to any subclass that
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// defines a virtual destructor, so we can only make it protected;
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// worse, some C++ compilers will synthesize calls to this function
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// from the "deleting destructors" that they emit in case of
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// delete-expressions, so it can't even be undefined.
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void operator delete(void* aPtr, size_t sz);
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public:
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// nsQueryFrame
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NS_DECL_QUERYFRAME
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void* operator new(size_t, nsIPresShell*) MOZ_MUST_OVERRIDE;
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virtual nsQueryFrame::FrameIID GetFrameId() MOZ_MUST_OVERRIDE;
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// nsIFrame
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
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virtual nsStyleContext* GetAdditionalStyleContext(int32_t aIndex) const override;
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virtual void SetAdditionalStyleContext(int32_t aIndex,
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nsStyleContext* aStyleContext) override;
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virtual nscoord GetLogicalBaseline(mozilla::WritingMode aWritingMode) const override;
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virtual const nsFrameList& GetChildList(ChildListID aListID) const override;
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virtual void GetChildLists(nsTArray<ChildList>* aLists) const override;
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virtual nsresult HandleEvent(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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virtual nsresult GetContentForEvent(mozilla::WidgetEvent* aEvent,
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nsIContent** aContent) override;
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virtual nsresult GetCursor(const nsPoint& aPoint,
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nsIFrame::Cursor& aCursor) override;
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virtual nsresult GetPointFromOffset(int32_t inOffset,
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nsPoint* outPoint) override;
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virtual nsresult GetChildFrameContainingOffset(int32_t inContentOffset,
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bool inHint,
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int32_t* outFrameContentOffset,
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nsIFrame** outChildFrame) override;
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static nsresult GetNextPrevLineFromeBlockFrame(nsPresContext* aPresContext,
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nsPeekOffsetStruct *aPos,
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nsIFrame *aBlockFrame,
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int32_t aLineStart,
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int8_t aOutSideLimit
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);
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virtual nsresult CharacterDataChanged(CharacterDataChangeInfo* aInfo) override;
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virtual nsresult AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType) override;
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virtual nsSplittableType GetSplittableType() const override;
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virtual nsIFrame* GetPrevContinuation() const override;
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virtual void SetPrevContinuation(nsIFrame*) override;
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virtual nsIFrame* GetNextContinuation() const override;
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virtual void SetNextContinuation(nsIFrame*) override;
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virtual nsIFrame* GetPrevInFlowVirtual() const override;
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virtual void SetPrevInFlow(nsIFrame*) override;
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virtual nsIFrame* GetNextInFlowVirtual() const override;
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virtual void SetNextInFlow(nsIFrame*) override;
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virtual nsIAtom* GetType() const override;
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virtual nsresult IsSelectable(bool* aIsSelectable, uint8_t* aSelectStyle) const override;
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virtual nsresult GetSelectionController(nsPresContext *aPresContext, nsISelectionController **aSelCon) override;
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virtual FrameSearchResult PeekOffsetNoAmount(bool aForward, int32_t* aOffset) override;
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virtual FrameSearchResult PeekOffsetCharacter(bool aForward, int32_t* aOffset,
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bool aRespectClusters = true) override;
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virtual FrameSearchResult PeekOffsetWord(bool aForward, bool aWordSelectEatSpace, bool aIsKeyboardSelect,
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int32_t* aOffset, PeekWordState *aState) override;
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/**
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* Check whether we should break at a boundary between punctuation and
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* non-punctuation. Only call it at a punctuation boundary
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* (i.e. exactly one of the previous and next characters are punctuation).
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* @param aForward true if we're moving forward in content order
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* @param aPunctAfter true if the next character is punctuation
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* @param aWhitespaceAfter true if the next character is whitespace
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*/
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bool BreakWordBetweenPunctuation(const PeekWordState* aState,
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bool aForward,
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bool aPunctAfter, bool aWhitespaceAfter,
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bool aIsKeyboardSelect);
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virtual nsresult CheckVisibility(nsPresContext* aContext, int32_t aStartIndex, int32_t aEndIndex, bool aRecurse, bool *aFinished, bool *_retval) override;
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virtual nsresult GetOffsets(int32_t &aStart, int32_t &aEnd) const override;
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virtual void ChildIsDirty(nsIFrame* aChild) override;
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#ifdef ACCESSIBILITY
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virtual mozilla::a11y::AccType AccessibleType() override;
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#endif
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virtual nsStyleContext* GetParentStyleContext(nsIFrame** aProviderFrame) const override {
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return DoGetParentStyleContext(aProviderFrame);
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}
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/**
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* Do the work for getting the parent style context frame so that
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* other frame's |GetParentStyleContext| methods can call this
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* method on *another* frame. (This function handles out-of-flow
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* frames by using the frame manager's placeholder map and it also
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* handles block-within-inline and generated content wrappers.)
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*
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* @param aProviderFrame (out) the frame associated with the returned value
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* or null if the style context is for display:contents content.
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* @return The style context that should be the parent of this frame's
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* style context. Null is permitted, and means that this frame's
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* style context should be the root of the style context tree.
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*/
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nsStyleContext* DoGetParentStyleContext(nsIFrame** aProviderFrame) const;
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virtual bool IsEmpty() override;
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virtual bool IsSelfEmpty() override;
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virtual void MarkIntrinsicISizesDirty() override;
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virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override;
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virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override;
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virtual void AddInlineMinISize(nsRenderingContext *aRenderingContext,
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InlineMinISizeData *aData) override;
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virtual void AddInlinePrefISize(nsRenderingContext *aRenderingContext,
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InlinePrefISizeData *aData) override;
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virtual IntrinsicISizeOffsetData IntrinsicISizeOffsets() override;
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virtual mozilla::IntrinsicSize GetIntrinsicSize() override;
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virtual nsSize GetIntrinsicRatio() override;
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virtual mozilla::LogicalSize
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ComputeSize(nsRenderingContext *aRenderingContext,
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mozilla::WritingMode aWritingMode,
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const mozilla::LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorder,
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const mozilla::LogicalSize& aPadding,
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ComputeSizeFlags aFlags) override;
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// Compute tight bounds assuming this frame honours its border, background
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// and outline, its children's tight bounds, and nothing else.
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nsRect ComputeSimpleTightBounds(gfxContext* aContext) const;
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/**
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* A helper, used by |nsFrame::ComputeSize| (for frames that need to
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* override only this part of ComputeSize), that computes the size
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* that should be returned when 'width', 'height', and
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* min/max-width/height are all 'auto' or equivalent.
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*
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* In general, frames that can accept any computed width/height should
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* override only ComputeAutoSize, and frames that cannot do so need to
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* override ComputeSize to enforce their width/height invariants.
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*
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* Implementations may optimize by returning a garbage width if
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* StylePosition()->mWidth.GetUnit() != eStyleUnit_Auto, and
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* likewise for height, since in such cases the result is guaranteed
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* to be unused.
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*/
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virtual mozilla::LogicalSize
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ComputeAutoSize(nsRenderingContext *aRenderingContext,
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mozilla::WritingMode aWritingMode,
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const mozilla::LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorder,
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const mozilla::LogicalSize& aPadding,
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bool aShrinkWrap);
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/**
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* Utility function for ComputeAutoSize implementations. Return
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* max(GetMinISize(), min(aWidthInCB, GetPrefISize()))
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*/
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nscoord ShrinkWidthToFit(nsRenderingContext *aRenderingContext,
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nscoord aWidthInCB);
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/**
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* Calculates the size of this frame after reflowing (calling Reflow on, and
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* updating the size and position of) its children, as necessary. The
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* calculated size is returned to the caller via the nsHTMLReflowMetrics
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* outparam. (The caller is responsible for setting the actual size and
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* position of this frame.)
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*
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* A frame's children must _all_ be reflowed if the frame is dirty (the
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* NS_FRAME_IS_DIRTY bit is set on it). Otherwise, individual children
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* must be reflowed if they are dirty or have the NS_FRAME_HAS_DIRTY_CHILDREN
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* bit set on them. Otherwise, whether children need to be reflowed depends
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* on the frame's type (it's up to individual Reflow methods), and on what
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* has changed. For example, a change in the width of the frame may require
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* all of its children to be reflowed (even those without dirty bits set on
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* them), whereas a change in its height might not.
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* (nsHTMLReflowState::ShouldReflowAllKids may be helpful in deciding whether
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* to reflow all the children, but for some frame types it might result in
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* over-reflow.)
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*
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* Note: if it's only the overflow rect(s) of a frame that need to be
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* updated, then UpdateOverflow should be called instead of Reflow.
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*/
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virtual void Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus) override;
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virtual void DidReflow(nsPresContext* aPresContext,
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const nsHTMLReflowState* aReflowState,
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nsDidReflowStatus aStatus) override;
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/**
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* NOTE: aStatus is assumed to be already-initialized. The reflow statuses of
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* any reflowed absolute children will be merged into aStatus; aside from
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* that, this method won't modify aStatus.
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*/
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void ReflowAbsoluteFrames(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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bool aConstrainBSize = true);
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void FinishReflowWithAbsoluteFrames(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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bool aConstrainBSize = true);
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/*
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* If this frame is dirty, marks all absolutely-positioned children of this
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* frame dirty. If this frame isn't dirty, or if there are no
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* absolutely-positioned children, does nothing.
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*
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* It's necessary to use PushDirtyBitToAbsoluteFrames() when you plan to
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* reflow this frame's absolutely-positioned children after the dirty bit on
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* this frame has already been cleared, which prevents nsHTMLReflowState from
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* propagating the dirty bit normally. This situation generally only arises
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* when a multipass layout algorithm is used.
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*/
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void PushDirtyBitToAbsoluteFrames();
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virtual bool CanContinueTextRun() const override;
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virtual bool UpdateOverflow() override;
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// Selection Methods
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NS_IMETHOD HandlePress(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus,
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bool aControlHeld);
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NS_IMETHOD HandleDrag(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
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mozilla::WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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enum { SELECT_ACCUMULATE = 0x01 };
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nsresult PeekBackwardAndForward(nsSelectionAmount aAmountBack,
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nsSelectionAmount aAmountForward,
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int32_t aStartPos,
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nsPresContext* aPresContext,
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bool aJumpLines,
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uint32_t aSelectFlags);
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nsresult SelectByTypeAtPoint(nsPresContext* aPresContext,
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const nsPoint& aPoint,
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nsSelectionAmount aBeginAmountType,
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nsSelectionAmount aEndAmountType,
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uint32_t aSelectFlags);
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// Helper for GetContentAndOffsetsFromPoint; calculation of content offsets
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// in this function assumes there is no child frame that can be targeted.
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virtual ContentOffsets CalcContentOffsetsFromFramePoint(nsPoint aPoint);
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// Box layout methods
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virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nscoord GetFlex(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState) override;
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// We compute and store the HTML content's overflow area. So don't
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// try to compute it in the box code.
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virtual bool ComputesOwnOverflowArea() override { return true; }
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//--------------------------------------------------
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// Additional methods
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// Helper function that tests if the frame tree is too deep; if it is
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// it marks the frame as "unflowable", zeroes out the metrics, sets
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// the reflow status, and returns true. Otherwise, the frame is
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// unmarked "unflowable" and the metrics and reflow status are not
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// touched and false is returned.
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bool IsFrameTreeTooDeep(const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aMetrics,
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nsReflowStatus& aStatus);
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// Incorporate the child overflow areas into aOverflowAreas.
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// If the child does not have a overflow, use the child area.
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void ConsiderChildOverflow(nsOverflowAreas& aOverflowAreas,
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nsIFrame* aChildFrame);
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/**
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* @return true if we should avoid a page/column break in this frame.
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*/
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bool ShouldAvoidBreakInside(const nsHTMLReflowState& aReflowState) const {
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return !aReflowState.mFlags.mIsTopOfPage &&
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NS_STYLE_PAGE_BREAK_AVOID == StyleDisplay()->mBreakInside &&
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!GetPrevInFlow();
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}
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#ifdef DEBUG
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/**
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* Tracing method that writes a method enter/exit routine to the
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* nspr log using the nsIFrame log module. The tracing is only
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|
* done when the NS_FRAME_TRACE_CALLS bit is set in the log module's
|
|
* level field.
|
|
*/
|
|
void Trace(const char* aMethod, bool aEnter);
|
|
void Trace(const char* aMethod, bool aEnter, nsReflowStatus aStatus);
|
|
void TraceMsg(const char* fmt, ...);
|
|
|
|
// Helper function that verifies that each frame in the list has the
|
|
// NS_FRAME_IS_DIRTY bit set
|
|
static void VerifyDirtyBitSet(const nsFrameList& aFrameList);
|
|
|
|
static void XMLQuote(nsString& aString);
|
|
|
|
/**
|
|
* Dump out the "base classes" regression data. This should dump
|
|
* out the interior data, not the "frame" XML container. And it
|
|
* should call the base classes same named method before doing
|
|
* anything specific in a derived class. This means that derived
|
|
* classes need not override DumpRegressionData unless they need
|
|
* some custom behavior that requires changing how the outer "frame"
|
|
* XML container is dumped.
|
|
*/
|
|
virtual void DumpBaseRegressionData(nsPresContext* aPresContext, FILE* out, int32_t aIndent);
|
|
|
|
// Display Reflow Debugging
|
|
static void* DisplayReflowEnter(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
const nsHTMLReflowState& aReflowState);
|
|
static void* DisplayLayoutEnter(nsIFrame* aFrame);
|
|
static void* DisplayIntrinsicISizeEnter(nsIFrame* aFrame,
|
|
const char* aType);
|
|
static void* DisplayIntrinsicSizeEnter(nsIFrame* aFrame,
|
|
const char* aType);
|
|
static void DisplayReflowExit(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
uint32_t aStatus,
|
|
void* aFrameTreeNode);
|
|
static void DisplayLayoutExit(nsIFrame* aFrame,
|
|
void* aFrameTreeNode);
|
|
static void DisplayIntrinsicISizeExit(nsIFrame* aFrame,
|
|
const char* aType,
|
|
nscoord aResult,
|
|
void* aFrameTreeNode);
|
|
static void DisplayIntrinsicSizeExit(nsIFrame* aFrame,
|
|
const char* aType,
|
|
nsSize aResult,
|
|
void* aFrameTreeNode);
|
|
|
|
static void DisplayReflowStartup();
|
|
static void DisplayReflowShutdown();
|
|
#endif
|
|
|
|
/**
|
|
* Adds display items for standard CSS background if necessary.
|
|
* Does not check IsVisibleForPainting.
|
|
* @param aForceBackground draw the background even if the frame
|
|
* background style appears to have no background --- this is useful
|
|
* for frames that might receive a propagated background via
|
|
* nsCSSRendering::FindBackground
|
|
* @return whether a themed background item was created.
|
|
*/
|
|
bool DisplayBackgroundUnconditional(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists,
|
|
bool aForceBackground);
|
|
/**
|
|
* Adds display items for standard CSS borders, background and outline for
|
|
* for this frame, as necessary. Checks IsVisibleForPainting and won't
|
|
* display anything if the frame is not visible.
|
|
* @param aForceBackground draw the background even if the frame
|
|
* background style appears to have no background --- this is useful
|
|
* for frames that might receive a propagated background via
|
|
* nsCSSRendering::FindBackground
|
|
*/
|
|
void DisplayBorderBackgroundOutline(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists,
|
|
bool aForceBackground = false);
|
|
/**
|
|
* Add a display item for the CSS outline. Does not check visibility.
|
|
*/
|
|
void DisplayOutlineUnconditional(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists);
|
|
/**
|
|
* Add a display item for the CSS outline, after calling
|
|
* IsVisibleForPainting to confirm we are visible.
|
|
*/
|
|
void DisplayOutline(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists);
|
|
|
|
/**
|
|
* Adjust the given parent frame to the right style context parent frame for
|
|
* the child, given the pseudo-type of the prospective child. This handles
|
|
* things like walking out of table pseudos and so forth.
|
|
*
|
|
* @param aProspectiveParent what GetParent() on the child returns.
|
|
* Must not be null.
|
|
* @param aChildPseudo the child's pseudo type, if any.
|
|
*/
|
|
static nsIFrame*
|
|
CorrectStyleParentFrame(nsIFrame* aProspectiveParent, nsIAtom* aChildPseudo);
|
|
|
|
protected:
|
|
// Protected constructor and destructor
|
|
explicit nsFrame(nsStyleContext* aContext);
|
|
virtual ~nsFrame();
|
|
|
|
/**
|
|
* To be called by |BuildDisplayLists| of this class or derived classes to add
|
|
* a translucent overlay if this frame's content is selected.
|
|
* @param aContentType an nsISelectionDisplay DISPLAY_ constant identifying
|
|
* which kind of content this is for
|
|
*/
|
|
void DisplaySelectionOverlay(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList, uint16_t aContentType = nsISelectionDisplay::DISPLAY_FRAMES);
|
|
|
|
int16_t DisplaySelection(nsPresContext* aPresContext, bool isOkToTurnOn = false);
|
|
|
|
// Style post processing hook
|
|
virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
|
|
|
|
public:
|
|
//given a frame five me the first/last leaf available
|
|
//XXX Robert O'Callahan wants to move these elsewhere
|
|
static void GetLastLeaf(nsPresContext* aPresContext, nsIFrame **aFrame);
|
|
static void GetFirstLeaf(nsPresContext* aPresContext, nsIFrame **aFrame);
|
|
|
|
// Return the line number of the aFrame, and (optionally) the containing block
|
|
// frame.
|
|
// If aScrollLock is true, don't break outside scrollframes when looking for a
|
|
// containing block frame.
|
|
static int32_t GetLineNumber(nsIFrame *aFrame,
|
|
bool aLockScroll,
|
|
nsIFrame** aContainingBlock = nullptr);
|
|
|
|
/**
|
|
* Returns true if aFrame should apply overflow clipping.
|
|
*/
|
|
static bool ShouldApplyOverflowClipping(const nsIFrame* aFrame,
|
|
const nsStyleDisplay* aDisp)
|
|
{
|
|
// clip overflow:-moz-hidden-unscrollable, except for nsListControlFrame,
|
|
// which is an nsHTMLScrollFrame.
|
|
if (MOZ_UNLIKELY(aDisp->mOverflowX == NS_STYLE_OVERFLOW_CLIP &&
|
|
aFrame->GetType() != nsGkAtoms::listControlFrame)) {
|
|
return true;
|
|
}
|
|
|
|
// and overflow:hidden that we should interpret as -moz-hidden-unscrollable
|
|
if (aDisp->mOverflowX == NS_STYLE_OVERFLOW_HIDDEN &&
|
|
aDisp->mOverflowY == NS_STYLE_OVERFLOW_HIDDEN) {
|
|
// REVIEW: these are the frame types that set up clipping.
|
|
nsIAtom* type = aFrame->GetType();
|
|
if (type == nsGkAtoms::tableFrame ||
|
|
type == nsGkAtoms::tableCellFrame ||
|
|
type == nsGkAtoms::bcTableCellFrame ||
|
|
type == nsGkAtoms::svgOuterSVGFrame ||
|
|
type == nsGkAtoms::svgInnerSVGFrame ||
|
|
type == nsGkAtoms::svgForeignObjectFrame) {
|
|
return true;
|
|
}
|
|
if (aFrame->IsFrameOfType(nsIFrame::eReplacedContainsBlock)) {
|
|
if (type == nsGkAtoms::textInputFrame) {
|
|
// It always has an anonymous scroll frame that handles any overflow.
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if ((aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT)) {
|
|
return false;
|
|
}
|
|
|
|
// If we're paginated and a block, and have NS_BLOCK_CLIP_PAGINATED_OVERFLOW
|
|
// set, then we want to clip our overflow.
|
|
return
|
|
(aFrame->GetStateBits() & NS_BLOCK_CLIP_PAGINATED_OVERFLOW) != 0 &&
|
|
aFrame->PresContext()->IsPaginated() &&
|
|
aFrame->GetType() == nsGkAtoms::blockFrame;
|
|
}
|
|
|
|
virtual nsILineIterator* GetLineIterator() override;
|
|
|
|
protected:
|
|
|
|
// Test if we are selecting a table object:
|
|
// Most table/cell selection requires that Ctrl (Cmd on Mac) key is down
|
|
// during a mouse click or drag. Exception is using Shift+click when
|
|
// already in "table/cell selection mode" to extend a block selection
|
|
// Get the parent content node and offset of the frame
|
|
// of the enclosing cell or table (if not inside a cell)
|
|
// aTarget tells us what table element to select (currently only cell and table supported)
|
|
// (enums for this are defined in nsIFrame.h)
|
|
NS_IMETHOD GetDataForTableSelection(const nsFrameSelection* aFrameSelection,
|
|
nsIPresShell* aPresShell,
|
|
mozilla::WidgetMouseEvent* aMouseEvent,
|
|
nsIContent** aParentContent,
|
|
int32_t* aContentOffset,
|
|
int32_t* aTarget);
|
|
|
|
// Fills aCursor with the appropriate information from ui
|
|
static void FillCursorInformationFromStyle(const nsStyleUserInterface* ui,
|
|
nsIFrame::Cursor& aCursor);
|
|
NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState) override;
|
|
|
|
#ifdef DEBUG_LAYOUT
|
|
virtual void GetBoxName(nsAutoString& aName) override;
|
|
#endif
|
|
|
|
nsBoxLayoutMetrics* BoxMetrics() const;
|
|
|
|
// Fire DOM event. If no aContent argument use frame's mContent.
|
|
void FireDOMEvent(const nsAString& aDOMEventName, nsIContent *aContent = nullptr);
|
|
|
|
private:
|
|
void BoxReflow(nsBoxLayoutState& aState,
|
|
nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
nsRenderingContext* aRenderingContext,
|
|
nscoord aX,
|
|
nscoord aY,
|
|
nscoord aWidth,
|
|
nscoord aHeight,
|
|
bool aMoveFrame = true);
|
|
|
|
NS_IMETHODIMP RefreshSizeCache(nsBoxLayoutState& aState);
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
public:
|
|
/**
|
|
* Get a printable from of the name of the frame type.
|
|
* XXX This should be eliminated and we use GetType() instead...
|
|
*/
|
|
virtual nsresult GetFrameName(nsAString& aResult) const override;
|
|
nsresult MakeFrameName(const nsAString& aKind, nsAString& aResult) const;
|
|
// Helper function to return the index in parent of the frame's content
|
|
// object. Returns -1 on error or if the frame doesn't have a content object
|
|
static int32_t ContentIndexInContainer(const nsIFrame* aFrame);
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
public:
|
|
/**
|
|
* Return the state bits that are relevant to regression tests (that
|
|
* is, those bits which indicate a real difference when they differ
|
|
*/
|
|
virtual nsFrameState GetDebugStateBits() const override;
|
|
/**
|
|
* Called to dump out regression data that describes the layout
|
|
* of the frame and its children, and so on. The format of the
|
|
* data is dictated to be XML (using a specific DTD); the
|
|
* specific kind of data dumped is up to the frame itself, with
|
|
* the caveat that some base types are defined.
|
|
* For more information, see XXX.
|
|
*/
|
|
virtual nsresult DumpRegressionData(nsPresContext* aPresContext,
|
|
FILE* out, int32_t aIndent) override;
|
|
|
|
/**
|
|
* See if style tree verification is enabled. To enable style tree
|
|
* verification add "styleverifytree:1" to your NSPR_LOG_MODULES
|
|
* environment variable (any non-zero debug level will work). Or,
|
|
* call SetVerifyStyleTreeEnable with true.
|
|
*/
|
|
static bool GetVerifyStyleTreeEnable();
|
|
|
|
/**
|
|
* Set the verify-style-tree enable flag.
|
|
*/
|
|
static void SetVerifyStyleTreeEnable(bool aEnabled);
|
|
|
|
/**
|
|
* The frame class and related classes share an nspr log module
|
|
* for logging frame activity.
|
|
*
|
|
* Note: the log module is created during library initialization which
|
|
* means that you cannot perform logging before then.
|
|
*/
|
|
static PRLogModuleInfo* GetLogModuleInfo();
|
|
|
|
// Show frame borders when rendering
|
|
static void ShowFrameBorders(bool aEnable);
|
|
static bool GetShowFrameBorders();
|
|
|
|
// Show frame border of event target
|
|
static void ShowEventTargetFrameBorder(bool aEnable);
|
|
static bool GetShowEventTargetFrameBorder();
|
|
|
|
#endif
|
|
|
|
public:
|
|
|
|
static void PrintDisplayItem(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem,
|
|
std::stringstream& aStream,
|
|
bool aDumpSublist = false,
|
|
bool aDumpHtml = false);
|
|
|
|
static void PrintDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayList& aList,
|
|
bool aDumpHtml = false)
|
|
{
|
|
std::stringstream ss;
|
|
PrintDisplayList(aBuilder, aList, ss, aDumpHtml);
|
|
fprintf_stderr(stderr, "%s", ss.str().c_str());
|
|
}
|
|
static void PrintDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayList& aList,
|
|
std::stringstream& aStream,
|
|
bool aDumpHtml = false);
|
|
static void PrintDisplayListSet(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aList,
|
|
std::stringstream& aStream,
|
|
bool aDumpHtml = false);
|
|
|
|
};
|
|
|
|
// Start Display Reflow Debugging
|
|
#ifdef DEBUG
|
|
|
|
struct DR_cookie {
|
|
DR_cookie(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
nsReflowStatus& aStatus);
|
|
~DR_cookie();
|
|
void Change() const;
|
|
|
|
nsPresContext* mPresContext;
|
|
nsIFrame* mFrame;
|
|
const nsHTMLReflowState& mReflowState;
|
|
nsHTMLReflowMetrics& mMetrics;
|
|
nsReflowStatus& mStatus;
|
|
void* mValue;
|
|
};
|
|
|
|
struct DR_layout_cookie {
|
|
explicit DR_layout_cookie(nsIFrame* aFrame);
|
|
~DR_layout_cookie();
|
|
|
|
nsIFrame* mFrame;
|
|
void* mValue;
|
|
};
|
|
|
|
struct DR_intrinsic_width_cookie {
|
|
DR_intrinsic_width_cookie(nsIFrame* aFrame, const char* aType,
|
|
nscoord& aResult);
|
|
~DR_intrinsic_width_cookie();
|
|
|
|
nsIFrame* mFrame;
|
|
const char* mType;
|
|
nscoord& mResult;
|
|
void* mValue;
|
|
};
|
|
|
|
struct DR_intrinsic_size_cookie {
|
|
DR_intrinsic_size_cookie(nsIFrame* aFrame, const char* aType,
|
|
nsSize& aResult);
|
|
~DR_intrinsic_size_cookie();
|
|
|
|
nsIFrame* mFrame;
|
|
const char* mType;
|
|
nsSize& mResult;
|
|
void* mValue;
|
|
};
|
|
|
|
struct DR_init_constraints_cookie {
|
|
DR_init_constraints_cookie(nsIFrame* aFrame, nsHTMLReflowState* aState,
|
|
nscoord aCBWidth, nscoord aCBHeight,
|
|
const nsMargin* aBorder,
|
|
const nsMargin* aPadding);
|
|
~DR_init_constraints_cookie();
|
|
|
|
nsIFrame* mFrame;
|
|
nsHTMLReflowState* mState;
|
|
void* mValue;
|
|
};
|
|
|
|
struct DR_init_offsets_cookie {
|
|
DR_init_offsets_cookie(nsIFrame* aFrame, nsCSSOffsetState* aState,
|
|
const mozilla::LogicalSize& aPercentBasis,
|
|
const nsMargin* aBorder,
|
|
const nsMargin* aPadding);
|
|
~DR_init_offsets_cookie();
|
|
|
|
nsIFrame* mFrame;
|
|
nsCSSOffsetState* mState;
|
|
void* mValue;
|
|
};
|
|
|
|
struct DR_init_type_cookie {
|
|
DR_init_type_cookie(nsIFrame* aFrame, nsHTMLReflowState* aState);
|
|
~DR_init_type_cookie();
|
|
|
|
nsIFrame* mFrame;
|
|
nsHTMLReflowState* mState;
|
|
void* mValue;
|
|
};
|
|
|
|
#define DISPLAY_REFLOW(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status) \
|
|
DR_cookie dr_cookie(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status);
|
|
#define DISPLAY_REFLOW_CHANGE() \
|
|
dr_cookie.Change();
|
|
#define DISPLAY_LAYOUT(dr_frame) \
|
|
DR_layout_cookie dr_cookie(dr_frame);
|
|
#define DISPLAY_MIN_WIDTH(dr_frame, dr_result) \
|
|
DR_intrinsic_width_cookie dr_cookie(dr_frame, "Min", dr_result)
|
|
#define DISPLAY_PREF_WIDTH(dr_frame, dr_result) \
|
|
DR_intrinsic_width_cookie dr_cookie(dr_frame, "Pref", dr_result)
|
|
#define DISPLAY_PREF_SIZE(dr_frame, dr_result) \
|
|
DR_intrinsic_size_cookie dr_cookie(dr_frame, "Pref", dr_result)
|
|
#define DISPLAY_MIN_SIZE(dr_frame, dr_result) \
|
|
DR_intrinsic_size_cookie dr_cookie(dr_frame, "Min", dr_result)
|
|
#define DISPLAY_MAX_SIZE(dr_frame, dr_result) \
|
|
DR_intrinsic_size_cookie dr_cookie(dr_frame, "Max", dr_result)
|
|
#define DISPLAY_INIT_CONSTRAINTS(dr_frame, dr_state, dr_cbw, dr_cbh, \
|
|
dr_bdr, dr_pad) \
|
|
DR_init_constraints_cookie dr_cookie(dr_frame, dr_state, dr_cbw, dr_cbh, \
|
|
dr_bdr, dr_pad)
|
|
#define DISPLAY_INIT_OFFSETS(dr_frame, dr_state, dr_pb, dr_bdr, dr_pad) \
|
|
DR_init_offsets_cookie dr_cookie(dr_frame, dr_state, dr_pb, dr_bdr, dr_pad)
|
|
#define DISPLAY_INIT_TYPE(dr_frame, dr_result) \
|
|
DR_init_type_cookie dr_cookie(dr_frame, dr_result)
|
|
|
|
#else
|
|
|
|
#define DISPLAY_REFLOW(dr_pres_context, dr_frame, dr_rf_state, dr_rf_metrics, dr_rf_status)
|
|
#define DISPLAY_REFLOW_CHANGE()
|
|
#define DISPLAY_LAYOUT(dr_frame) PR_BEGIN_MACRO PR_END_MACRO
|
|
#define DISPLAY_MIN_WIDTH(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
|
|
#define DISPLAY_PREF_WIDTH(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
|
|
#define DISPLAY_PREF_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
|
|
#define DISPLAY_MIN_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
|
|
#define DISPLAY_MAX_SIZE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
|
|
#define DISPLAY_INIT_CONSTRAINTS(dr_frame, dr_state, dr_cbw, dr_cbh, \
|
|
dr_bdr, dr_pad) \
|
|
PR_BEGIN_MACRO PR_END_MACRO
|
|
#define DISPLAY_INIT_OFFSETS(dr_frame, dr_state, dr_pb, dr_bdr, dr_pad) \
|
|
PR_BEGIN_MACRO PR_END_MACRO
|
|
#define DISPLAY_INIT_TYPE(dr_frame, dr_result) PR_BEGIN_MACRO PR_END_MACRO
|
|
|
|
#endif
|
|
// End Display Reflow Debugging
|
|
|
|
// similar to NS_ENSURE_TRUE but with no return value
|
|
#define ENSURE_TRUE(x) \
|
|
PR_BEGIN_MACRO \
|
|
if (!(x)) { \
|
|
NS_WARNING("ENSURE_TRUE(" #x ") failed"); \
|
|
return; \
|
|
} \
|
|
PR_END_MACRO
|
|
#endif /* nsFrame_h___ */
|